Event Server Health Tests

This Event Server health test checks that the Auditing for the Event Server role is getting processed correctly and is not blocked. A failure of this health test may indicate a problem with the audit pipeline of Event Server process. This test can fail either because the Cloudera Audit Server is not accepting audits, or the Cloudera Manager Agent on the Event Server host isn't able to send audits because of some network issue. Check the Cloudera Manager Agent logs and Cloudera Audit Server logs for more details. This test can be enabled or disabled using the Navigator Audit Pipeline Health Check Event Server monitoring setting.

Short Name: Audit Pipeline Test

This is a Event Server health test that checks if the Cloudera Manager descriptor has been refreshed recently. The Cloudera Manager descriptor is used to pass configuration information from the Cloudera Manager Server to the Event Server. If the descriptor becomes stale, Event Server operation may be impacted because the Event Server will receive information about new hosts, roles, and services, or changes to existing hosts, roles, and services. A stale descriptor usually indicates problems communicating with the Cloudera Manager Server but can also indicate performance problems or a bug. Consult the Event Server log and the Cloudera Manager Server log for more information. This test can be configured using the Cloudera Manager Descriptor Age Thresholds Cloudera Manager Event Server setting.

Short Name: Cloudera Manager Descriptor Age

This is a Event Server health test that checks that the filesystem containing the Event Server Index Directory of this Event Server has sufficient free space. See the Event Server Index Directory description on the Event Server configuration page for more information on this directory type. This test can be configured using the Event Server Index Directory Free Space Monitoring Absolute Thresholds and Event Server Index Directory Free Space Monitoring Percentage Thresholds Event Server monitoring settings.

Short Name: Event Server Index Directory Free Space

This is an Event Server health test that checks that the event store size has not grown too far above the configured event store capacity. A failure of this health test indicates that the Event Server is having a problem performing cleanup. This may indicate a configuration problem or bug in the Event Server. This test can be configured using the Event Store Capacity Monitoring Thresholds Event Server monitoring setting.

Short Name: Event Store Size

This Event Server health test checks that the number of file descriptors used does not rise above some percentage of the Event Server file descriptor limit. A failure of this health test may indicate a bug in either Hadoop or Cloudera Manager. Contact Cloudera support. This test can be configured using the File Descriptor Monitoring Thresholds Event Server monitoring setting.

Short Name: File Descriptors

This Event Server health test checks that the Event Server is not spending too much time performing Java garbage collection. It checks that no more than some percentage of recent time is spent performing Java garbage collection. A failure of this health test may indicate a capacity planning problem or misconfiguration of the Event Server. This test can be configured using the Garbage Collection Duration Thresholds and Garbage Collection Duration Monitoring Period Event Server monitoring settings.

Short Name: GC Duration

This Event Server health test checks that the filesystem containing the heap dump directory of this Event Server has sufficient free space. This test can be configured using the Heap Dump Directory Free Space Monitoring Absolute Thresholds and Heap Dump Directory Free Space Monitoring Percentage Thresholds Event Server monitoring settings.

Short Name: Heap Dump Directory Free Space

This Event Server health test factors in the health of the host upon which the Event Server is running. A failure of this test means that the host running the Event Server is experiencing some problem. See that host's status page for more details.This test can be enabled or disabled using the Event Server Host Health Test Event Server monitoring setting.

Short Name: Host Health

This Event Server health test checks that the filesystem containing the log directory of this Event Server has sufficient free space. This test can be configured using the Log Directory Free Space Monitoring Absolute Thresholds and Log Directory Free Space Monitoring Percentage Thresholds Event Server monitoring settings.

Short Name: Log Directory Free Space

This Event Server health test checks that the Cloudera Manager Agent on the Event Server host is heart beating correctly and that the process associated with the Event Server role is in the state expected by Cloudera Manager. A failure of this health test may indicate a problem with the Event Server process, a lack of connectivity to the Cloudera Manager Agent on the Event Server host, or a problem with the Cloudera Manager Agent. This test can fail either because the Event Server has crashed or because the Event Server will not start or stop in a timely fashion. Check the Event Server logs for more details. If the test fails because of problems communicating with the Cloudera Manager Agent on the Event Server host, check the status of the Cloudera Manager Agent by running /etc/init.d/cloudera-scm-agent status on the Event Server host, or look in the Cloudera Manager Agent logs on the Event Server host for more details. This test can be enabled or disabled using the Event Server Process Health Test Event Server monitoring setting.

Short Name: Process Status

This Event Server health test checks the amount of swap memory in use by the role. A failure of this health test may indicate that your machine is overloaded. This test can be configured using the Process Swap Memory Thresholds monitoring settings.

Short Name: Swap Memory Usage

This Event Server health test checks the change of the amount of swap memory usage by the role during a predefined period. A failure of this health test may indicate that your machine is overloaded. This test can be configured using the Swap Memory Usage Rate Thresholds and Swap Memory Usage Rate Window monitoring settings.

Short Name: Swap Memory Usage Rate Beta

This Event Server health test checks that the Event Server has not recently exited unexpectedly. The test returns "Bad" health if the number of unexpected exits exceeds a critical threshold. For example, if this test is configured with a critical threshold of 1, this test returns "Good" health if there have been no unexpected exits recently. If 1 or more unexpected exits occured recently, this test returns "Bad" health. The test also indicates whether any of the exits were caused by an OutOfMemory error if the Cloudera Manager Kill When Out of Memory monitoring setting is enabled. This test can be configured using the Unexpected Exits Thresholds and Unexpected Exits Monitoring Period Event Server monitoring settings.

Short Name: Unexpected Exits

This health test checks that the role's web server is responding quickly to requests by the Cloudera Manager Agent, and that the Cloudera Manager Agent can collect metrics from the web server. Failure of this health test may indicate a problem with the web server of the Event Server, a misconfiguration of the Event Server, or a problem with the Cloudera Manager Agent. Consult the Cloudera Manager Agent logs and the logs of the Event Server for more detail. If the test failure message indicates a communication problem, the Cloudera Manager Agent's HTTP requests to the Event Server's web server are failing or timing out. If the test's failure message indicates an unexpected response, the Event Server's web server responded to the Cloudera Manager Agent's request, but the response could not be interpreted for some reason. This test can be configured using the Web Metric Collection Event Server monitoring setting.

Short Name: Web Server Status

This Event Server health test checks that no messages are being dropped by the writer stage of the Event Server pipeline. A failure of this health test indicates a problem with the Event Server. This may indicate a configuration problem or a bug in the Event Server. This test can be configured using the Event Server Write Pipeline Monitoring Time Period monitoring setting.

Short Name: Write Pipeline